AndroGuru
Currently the Samsung Galaxy S3 is undergoing an update to Android 4.4.2 KitKat OS. Depending on the country you live in, this The French and Australian S3 users have yet to get the update and the update availability will depend in the country you live in.The update should be available across the globe by August 2014. 
At the same time do note that not all smartphone models are being updated. The 3G version for example does not have enough memory to run the latest KitKat OS and Samsung’s TouchWiz UI simultaneously so support is being dropped for all 1GB versions. The Samsung Galaxy S3 is one of the most popular Android smartphones even till today and has reportedly sold over 50 million units in 2013.
There were numerous suggestions that the Samsung Galaxy S3 and Samsung Galaxy Note 2 will cease being updated with the release of the Android 4.5 and 5.0 L mobile operating systems. There was not much of sale of the Galaxy S5 and the company wants to drive more people into buying the device. According to source, experts note that while these devices can support the new Android in terms of memory and other hardware. The Galaxy S3 works fine as of now with the update and there are not many issues that can be traced.
